will be the value of \( x \) ? (b) \( 2 x+1,3 x-1,3 x+5,5 x-7,51,63 \) and 70 are in ascending order. If the first quartileis 20 , what will be the value of \( x \) ?

6. If the roots of the equation \( \left(a^{2}+b^{2}\right) x^{2}-2\left(a c+b d^{2}\right) x+\left(c^{2}+d^{2}\right)=0 \) are equal, then pro \( \frac{a}{b}=\frac{c}{d} \).

6) \( (x-8)(x-3)(x-5)=(x-5)(x-3)(x-6) \)

\( \begin{array}{ll}\text { a) }(-5)^{4} \cdot(-2)^{4} & \text { b) }(-4)^{4} \cdot(-5)^{4} \\ \text { c) }(-18)^{3}:(-6)^{3} & \text { d) }(+35)^{3}:(-7)^{3} \\ \text { e) }\left[(-5)^{3}\right]^{2}:(-5)^{5} & \text { f) }\left[(+8)^{4}\right]^{3}:(-8)^{10}\end{array} \)

Find two consecuthe even integers whase Sum is 54 .

\( \begin{array}{ll}\text { 1) } \log _{3} 27 & \text { 4) } \log _{\frac{1}{3}} \sqrt[3]{9} \\ \text { 2) } \log _{\frac{1}{2}} 64 & \text { 5) } \log _{2 \sqrt{2}} 0^{\prime} 25 \\ \text { 3) } \log _{\sqrt{2}} 32 & \text { 6) } \log _{\frac{1}{2}} \frac{1}{2 \sqrt{8}}\end{array} \)